docs: def _get_non_space_email(self, doc) -> List:
          """
          Deal with corner case that there is "email" string in text and no space around it
          Args:
              doc: List[Token]
  
          Returns: Bool
          """
          result_lst = []
          for e in doc:
              if "mail:" in e.text.lower():
                  idx = e.text.lower().index("mail:") + 5
                  value = e.text[idx:]
                  tmp_doc = self._nlp(value)
                  tmp_email_matches = self._like_email_matcher(tmp_doc)
                  for match_id, start, end in tmp_email_matches:
                      span = tmp_doc[start:end]
                      if self._check_domain(self._tokenizer.tokenize(span.text)):
                          result_lst.append((span.text, idx+e.idx, idx+e.idx+len(value)))
  
          return result_lst